From 086b25d40a8fc3606d70c32af7f6af178e2d804d Mon Sep 17 00:00:00 2001 From: Christian Schaller Date: Fri, 6 May 2005 11:41:28 +0000 Subject: remove gst-libs from gst-plugins module as it is in gst-plugins-base now Original commit message from CVS: remove gst-libs from gst-plugins module as it is in gst-plugins-base now --- gst-libs/gst/resample/functable.c | 322 -------------------------------------- 1 file changed, 322 deletions(-) delete mode 100644 gst-libs/gst/resample/functable.c (limited to 'gst-libs/gst/resample/functable.c') diff --git a/gst-libs/gst/resample/functable.c b/gst-libs/gst/resample/functable.c deleted file mode 100644 index 29ce0418..00000000 --- a/gst-libs/gst/resample/functable.c +++ /dev/null @@ -1,322 +0,0 @@ -/* Resampling library - * Copyright (C) <2001> David A. Schleef - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Library General Public - * License as published by the Free Software Foundation; either - * version 2 of the License, or any later version. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Library General Public License for more details. - * - * You should have received a copy of the GNU Library General Public - * License along with this library; if not, write to the - * Free Software Foundation, Inc., 59 Temple Place - Suite 330, - * Boston, MA 02111-1307, USA. - */ - -#ifdef HAVE_CONFIG_H -#include "config.h" -#endif - -#include -#include -#include -#include - -#include "private.h" - - - -double -functable_sinc (void *p, double x) -{ - if (x == 0) - return 1; - return sin (x) / x; -} - -double -functable_dsinc (void *p, double x) -{ - if (x == 0) - return 0; - return cos (x) / x - sin (x) / (x * x); -} - -double -functable_window_boxcar (void *p, double x) -{ - if (x < -1 || x > 1) - return 0; - return 1; -} - -double -functable_window_dboxcar (void *p, double x) -{ - return 0; -} - -double -functable_window_std (void *p, double x) -{ - if (x < -1 || x > 1) - return 0; - return (1 - x * x) * (1 - x * x); -} - -double -functable_window_dstd (void *p, double x) -{ - if (x < -1 || x > 1) - return 0; - return -4 * x * (1 - x * x); -} - - - -void -functable_init (functable_t * t) -{ - int i; - double x; - - t->fx = malloc (sizeof (double) * (t->len + 1)); - t->fdx = malloc (sizeof (double) * (t->len + 1)); - - t->invoffset = 1.0 / t->offset; - - for (i = 0; i < t->len + 1; i++) { - x = t->start + t->offset * i; - x *= t->scale; - - t->fx[i] = t->func_x (t->priv, x); - t->fdx[i] = t->scale * t->func_dx (t->priv, x); - } - if (t->func2_x) { - double f1x, f1dx; - double f2x, f2dx; - - for (i = 0; i < t->len + 1; i++) { - x = t->start + t->offset * i; - x *= t->scale2; - - f2x = t->func2_x (t->priv, x); - f2dx = t->scale2 * t->func2_dx (t->priv, x); - - f1x = t->fx[i]; - f1dx = t->fdx[i]; - - t->fx[i] = f1x * f2x; - t->fdx[i] = f1x * f2dx + f1dx * f2x; - } - } -} - -double -functable_eval (functable_t * t, double x) -{ - int i; - double f0, f1, w0, w1; - double x2, x3; - double w; - - if (x < t->start || x > (t->start + (t->len + 1) * t->offset)) { - printf ("x out of range %g\n", x); - } - x -= t->start; - x /= t->offset; - i = floor (x); - x -= i; - - x2 = x * x; - x3 = x2 * x; - - f1 = 3 * x2 - 2 * x3; - f0 = 1 - f1; - w0 = (x - 2 * x2 + x3) * t->offset; - w1 = (-x2 + x3) * t->offset; - - /*printf("i=%d x=%g f0=%g f1=%g w0=%g w1=%g\n",i,x,f0,f1,w0,w1); */ - - w = t->fx[i] * f0 + t->fx[i + 1] * f1 + t->fdx[i] * w0 + t->fdx[i + 1] * w1; - - /*w = t->fx[i] * (1-x) + t->fx[i+1] * x; */ - - return w; -} - - -double -functable_fir (functable_t * t, double x, int n, double *data, int len) -{ - int i, j; - double f0, f1, w0, w1; - double x2, x3; - double w; - double sum; - - x -= t->start; - x /= t->offset; - i = floor (x); - x -= i; - - x2 = x * x; - x3 = x2 * x; - - f1 = 3 * x2 - 2 * x3; - f0 = 1 - f1; - w0 = (x - 2 * x2 + x3) * t->offset; - w1 = (-x2 + x3) * t->offset; - - sum = 0; - for (j = 0; j < len; j++) { - w = t->fx[i] * f0 + t->fx[i + 1] * f1 + t->fdx[i] * w0 + t->fdx[i + 1] * w1; - sum += data[j * 2] * w; - i += n; - } - - return sum; -} - -void -functable_fir2 (functable_t * t, double *r0, double *r1, double x, - int n, double *data, int len) -{ - int i, j; - double f0, f1, w0, w1; - double x2, x3; - double w; - double sum0, sum1; - double floor_x; - - x -= t->start; - x *= t->invoffset; - floor_x = floor (x); - i = floor_x; - x -= floor_x; - - x2 = x * x; - x3 = x2 * x; - - f1 = 3 * x2 - 2 * x3; - f0 = 1 - f1; - w0 = (x - 2 * x2 + x3) * t->offset; - w1 = (-x2 + x3) * t->offset; - - sum0 = 0; - sum1 = 0; - for (j = 0; j < len; j++) { - w = t->fx[i] * f0 + t->fx[i + 1] * f1 + t->fdx[i] * w0 + t->fdx[i + 1] * w1; - sum0 += data[j * 2] * w; - sum1 += data[j * 2 + 1] * w; - i += n; - -#define unroll2 -#define unroll3 -#define unroll4 -#ifdef unroll2 - j++; - - w = t->fx[i] * f0 + t->fx[i + 1] * f1 + t->fdx[i] * w0 + t->fdx[i + 1] * w1; - sum0 += data[j * 2] * w; - sum1 += data[j * 2 + 1] * w; - i += n; -#endif -#ifdef unroll3 - j++; - - w = t->fx[i] * f0 + t->fx[i + 1] * f1 + t->fdx[i] * w0 + t->fdx[i + 1] * w1; - sum0 += data[j * 2] * w; - sum1 += data[j * 2 + 1] * w; - i += n; -#endif -#ifdef unroll4 - j++; - - w = t->fx[i] * f0 + t->fx[i + 1] * f1 + t->fdx[i] * w0 + t->fdx[i + 1] * w1; - sum0 += data[j * 2] * w; - sum1 += data[j * 2 + 1] * w; - i += n; -#endif - } - - *r0 = sum0; - *r1 = sum1; -} - - - -#ifdef unused -void -functable_fir2_altivec (functable_t * t, float *r0, float *r1, - double x, int n, float *data, int len) -{ - int i, j; - double f0, f1, w0, w1; - double x2, x3; - double w; - double sum0, sum1; - double floor_x; - - x -= t->start; - x *= t->invoffset; - floor_x = floor (x); - i = floor_x; - x -= floor_x; - - x2 = x * x; - x3 = x2 * x; - - f1 = 3 * x2 - 2 * x3; - f0 = 1 - f1; - w0 = (x - 2 * x2 + x3) * t->offset; - w1 = (-x2 + x3) * t->offset; - - sum0 = 0; - sum1 = 0; - for (j = 0; j < len; j++) { - /* t->fx, t->fdx needs to be multiplexed by n */ - /* we need 5 consecutive floats, which fit into 2 vecs */ - /* load v0, t->fx[i] */ - /* load v1, t->fx[i+n] */ - /* v2 = v0 (not correct) */ - /* v3 = (v0>>32) || (v1<<3*32) (not correct) */ - /* */ - /* load v4, t->dfx[i] */ - /* load v5, t->dfx[i+n] */ - /* v6 = v4 (not correct) */ - /* v7 = (v4>>32) || (v5<<3*32) (not correct) */ - /* */ - /* v8 = splat(f0) */ - /* v9 = splat(f1) */ - /* v10 = splat(w0) */ - /* v11 = splat(w1) */ - /* */ - /* v12 = v2 * v8 */ - /* v12 += v3 * v9 */ - /* v12 += v6 * v10 */ - /* v12 += v7 * v11 */ - - w = t->fx[i] * f0 + t->fx[i + 1] * f1 + t->fdx[i] * w0 + t->fdx[i + 1] * w1; - - /* v13 = data[j*2] */ - /* v14 = data[j*2+4] */ - /* v15 = deinterlace_high(v13,v14) */ - /* v16 = deinterlace_low(v13,v14) */ - /* (sum0) v17 += multsum(v13,v15) */ - /* (sum1) v18 += multsum(v14,v16) */ - - sum0 += data[j * 2] * w; - sum1 += data[j * 2 + 1] * w; - i += n; - - } - - *r0 = sum0; - *r1 = sum1; -} -#endif -- cgit v1.2.1